Upholstered sofa



FIG. 1 is a front perspective view of an upholstered sofa embodying my design;

FIG. 2 is a right side view of FIG. 1;

FIG. 3 is a top plan view of FIG. 1; and,

FIG. 4 is a front perspective view of a modified form of the sofa shown in FIG. 1.

The back of the sofa in the specification is conventional and unornamented. 

The ornamental design for an upholstered sofa, as shown and described. 